Analog chip of power converter and power converter
A technology of power converter and analog chip, applied in output power conversion devices, photovoltaic power generation, electrical components, etc., can solve the problem of high cost of photovoltaic power generation system, and achieve the effect of reducing electrical parameters, low cost, and reducing system cost
Pending Publication Date: 2022-03-01
HUAWEI DIGITAL POWER TECH CO LTD
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Problems solved by technology
[0005] At present, the control of power converters is controlled by digital chips. However, if the number of photovoltaic substrings in the photovoltaic power generation system is large, the number of power converters required is also large, and each power converter requires a digital chip. , a larger number of digital chips is required, resulting in a higher cost of the entire photovoltaic power generation system
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[0039] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.
[0040] Words such as "first" and "second" in the following descriptions are used for description purposes only, and should not be understood as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Thus, a feature defined as "first", "second", etc. may expressly or implicitly include one or more of that feature. In the description of the present application, unless otherwise specified, "plurality" means two or more.
[0041] In this application, unless otherwise specified and limited, the term "connection" should be understood in a broad sense, for example, "connection" can be a fixed connection, a detachable connection, or an integral body; it can be a direct connection, or It can be connected indirectly through an intermediary. In addit...
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The invention discloses an analog chip of a power converter and the power converter, and the analog chip comprises a sampling circuit which is used for collecting the electrical parameters of the power converter, and the input end of the power converter is used for connecting a photovoltaic module; the maximum power tracking circuit obtains the input power and / or the output power of the power converter according to the electrical parameters, performs maximum power tracking according to the input power or the output power, and obtains an adjusting signal to the multiplexer; when the quick turn-off circuit receives a quick turn-off instruction sent by the outside of the analog chip, a quick turn-off signal is generated and sent to the multiplexer; the protection circuit generates a protection signal to the multiplexer when the electrical parameter of the power converter exceeds a first preset threshold value; the multiplexer selects one of the fast turn-off signal, the protection signal or the conditioning signal as a control signal to control a power device in the power converter. The analog chip can control the work of the power converter, and can greatly reduce the cost of a photovoltaic power generation system compared with a digital chip.
Description
technical field [0001] The present application relates to the technical field of photovoltaic power generation, and in particular to an analog chip of a power converter and the power converter. Background technique [0002] A photovoltaic power generation system generally includes a photovoltaic module and a power converter, wherein the photovoltaic module can convert solar energy into electrical energy. [0003] Currently, a photovoltaic module includes a plurality of photovoltaic substrings, and each photovoltaic substring includes a plurality of photovoltaic cells. Multiple photovoltaic modules can be connected in series or in parallel to form a photovoltaic array. There are diodes connected in parallel at both ends of each photovoltaic substring of the photovoltaic module. When the photovoltaic substring is shaded and cannot output enough current, the diode can bypass the photovoltaic substring, and the current of other photovoltaic substrings can flow through the diode...
Claims
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IPC IPC(8): H02M1/08H02M1/32H02H7/12H02H7/122
CPCH02M1/08H02M1/32H02H7/1213H02H7/122Y02E10/56H02M3/335H02J2300/26G05F1/67H02S40/32H02M3/156H02J3/381H02M1/322H02M1/36H02M3/1582H03K17/0822
Inventor 陈东曹震姚晓锋程杰斌顾桂磊
Owner HUAWEI DIGITAL POWER TECH CO LTD